SERGEY ZASYPAYKO (M.D) – Internal Medicine Physician, NPI 1992961775
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
766 HOSPITALIST in CT
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Provider Addresses for SERGEY ZASYPAYKO (M.D)
14, Business Park Drive, Branford, New Haven County, Connecticut, 06405, United States
BRANFORD, CT 064052909
Phone: (203) 643-0620
Fax: (203) 643-0623
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 25 Open Payments records for all available years, with a total value of $738.
Total Amount is formed as General ($738) + Research ($0) + Ownership ($0) = $738.
Last reported payment date: 2024-11-22 • Largest payer in this snapshot: HARMONY BIOSCIENCES LLC ($357).
Total Amount
$738
General + Research + Ownership
Payments
25
Total payment records
General Amount
$738
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-22
Latest reported date
Top Companies
Largest payers in this snapshot
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2011-05-24
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20081201000019 | I | Hospitalist | NY | TBD |
| I20110524000347 | I | Sleep Medicine | CT | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 66 | 57 | $0 |
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 54 | 54 | $0 |
| 99454 | Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | 38 | 34 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 34 | 34 | $0 |
| 87426 | Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus | 22 | 22 | $0 |
Insurance plans in this area (ZIP 06405)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Hospitalist | NY | |
| - | CT | |
| Pulmonary Disease, Internal Medicine | CT | |
| Physician Assistant | CT | |
| Physician Assistant | NJ | |
| Clinical Psychologist | CT | |
| Sleep Medicine | CT |
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